Diastereocontrol in the opening of vic-acceptor-donor cyclopropanes. Application to the synthesis of (cis) 1-EWG-2-hydroxymethylcyclopropanes
摘要:
Basic intramolecular ring opening reactions of vicinally substituted acceptor-donnor (trans)-cyclopropanes were studied. An application to the diastereoselective synthesis of (cis)-1-EWG-2-hydroxymethylcyclopropanes is presented.
A simple one-pot preparation of (Z)-cyclopropanes from γ,δ-ketoalkenes using KOH/DMSO intramolecular alkylation conditions.
摘要:
Sequential treatment of gamma,delta-ketoalkenes with aqueous NBS in DMSO and KOH as solid provides (Z)-cyclopropanes in good overall yields with a diastereoselective excess >99%.
Sequential treatment of gamma,delta-ketoalkenes with aqueous NBS in DMSO and KOH as solid provides (Z)-cyclopropanes in good overall yields with a diastereoselective excess >99%.
Diastereocontrol in the opening of vic-acceptor-donor cyclopropanes. Application to the synthesis of (cis) 1-EWG-2-hydroxymethylcyclopropanes
作者:Luc Dechoux、Eric Doris、Louis Jung、Jean François Stambach
DOI:10.1016/s0040-4039(00)77266-2
日期:1994.8
Basic intramolecular ring opening reactions of vicinally substituted acceptor-donnor (trans)-cyclopropanes were studied. An application to the diastereoselective synthesis of (cis)-1-EWG-2-hydroxymethylcyclopropanes is presented.